body {
    padding: 15px;
    background-color: #f2f3f5;
}

.cropper-wrapper {
    display: flex;
    width: 640px;
}

.left {
    width: 400px;
    height: 280px;
    overflow: hidden;
}
.preview {
    width: 200px;
    height: 140px;
    background-color: aqua;
    margin-bottom: 20px;
    overflow: hidden;
}
.right {
    flex: 1;
    display: flex;
    flex-direction: column;
    align-items: center;
}